On Thu, Nov 1, 2012 at 1:33 PM, Russell King - ARM Linux <li...@arm.linux.org.uk> wrote: > It's pointless having: > > tst r10, #_TIF_SECCOMP > bne __sys_trace > tst r10, #_TIF_SYSCALL_WORK > bne __sys_trace > > Instead, make TIF_SECCOMP be bit 11, combine it into _TIF_SYSCALL_WORK, and > eliminate all of that CONFIG_SECCOMP block.
Ah! Good point; I'd missed that _WORK was a bit field. I'll make those changes. >> diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c >> index 739db3a..6b0e14b 100644 >> --- a/arch/arm/kernel/ptrace.c >> +++ b/arch/arm/kernel/ptrace.c >> @@ -916,13 +916,15 @@ enum ptrace_syscall_dir { >> PTRACE_SYSCALL_EXIT, >> }; >> >> -static int ptrace_syscall_trace(struct pt_regs *regs, int scno, >> - enum ptrace_syscall_dir dir) >> +asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) > > I'm not sure this change is correct (combined with your hunk below). > What if we have auditing enabled but trace disabled? How do we reach > audit_syscall_entry()? Or the tracehook stuff? > > This patch looks wrong in too many ways. Oh, yeah, you're totally right. I will fix that up. Thanks! -Kees -- Kees Cook Chrome OS Security -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/